CVE-2026-12996

State: Published
Severity: 6.0 Medium
Published: Jul 30, 2026
Updated: Jul 30, 2026
Reserved: Jun 23, 2026

Description

A use-after-free in OpenVPN 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote authenticated peers to potentially cause a denial of service or leak memory via crafted packets during TLS session promotion or expiry

Scores

CVSS	Score	Vector	Source
4.0	6.0 Medium	CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N	OpenVPN

Weaknesses

CWE-416 Use after free
CWE-125 Out-of-bounds read

Affected Products

Product	Versions
OpenVPNOpenVPN	2.6.0 through 2.6.20Affected 2.7_alpha1 through 2.7.4Affected

References

https://community.openvpn.net/Security%20Announcements/CVE-2026-12996vendor-advisory
https://community.openvpn.net/ReleaseHistory#openvpn-275-released-1-july-2026release-notes
https://community.openvpn.net/ReleaseHistory#openvpn-2621-released-1-july-2026release-notes
https://lists.debian.org/debian-lts-announce/2026/07/msg00013.html

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